Invoked when you write data to a characteristic’s value.
- iOS 5.0+
- macOS 10.7+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
- watchOS 4.0+
The peripheral providing this information.
The characteristic whose value has been written.
If an error occurred, the cause of the failure.
Writing Characteristic and Characteristic Descriptor Values
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.Learn more about using Apple's beta software